<attribute name="id">
             <data type="token"/>
           </attribute>
-          <text/>
+         <element name="brief"><text/></element>
+         <optional><text/></optional>
           <zeroOrMore>
             <element name="section">
               <attribute name="id">
                 <data type="ID"/>
               </attribute>
-              <text/>
+             <element name="brief"><text/></element>
+             <optional><text/></optional>
             </element>
           </zeroOrMore>
         </element>
                           <value>schematron</value>
                         </choice>
                       </attribute>
-                      <element name="schema-filename">
-                        <data type="string"/>
-                      </element>
+                     <data type="string"/>
                     </element>
                   </group>
                 </choice>
 
 ;; This file must contain only ASCII characters. -->
 <doxygen>
   <page id="m17nDBData">
-    <brief>
-    Data provided by the m17n database</brief>
+    <brief> Data provided by the m17n database</brief>
     <section id="charprop">
       <brief>Character Property</brief>
     </section>